Started implementing OAuth handler.
Working version of OAuth.
- Now parsing Oauth session response content.
- New client methods: get_friends(), get_auth_user()
- Including fixtures for new methods
Started building tests for OAuth methods.
- Cleaned up tests
- Added test_get_friends()
Update README.md
- Added session exception class and get_access_tokens().
Merge branch 'master' into dev
- Added compare_books()
- Assorted cleanup
- Added test for compare_books()
- Fixed bug when comparison has 1 or 0 books.
Update README.md

Reformatted and wrapped individual code snippets. Added comparison examples.
Tweak to prevent NoneType error.
Changed how type is checked to be compatible with Python 2.6. "isinstance" checks if an object is of a class or any subclass (e.g., dict or OrderedDict).
Merge pull request #11 from zkendall/master

Implemented OAuth, two methods that use it, and tests for new methods.